Date: Sun, 23 Dec 2001 22:58:46 -0800 (PST) From: John Hanley <jh_@yahoo.com> To: Andrew Hannam <famzon@bigfoot.com>, freebsd-small@freebsd.org Subject: Re: Disk Writes Message-ID: <20011224065846.76833.qmail@web10108.mail.yahoo.com> In-Reply-To: <003d01c18c43$5446ad20$0104010a@famzon.com.au>
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--- Andrew Hannam <famzon@bigfoot.com> wrote:
> Transactions occur roughly 5->10 times a day. The application has been
> written to only append to files or to replace the file by creating a new
> file and then writing a single byte to redirect which file is in use.
>
> The problem is that in certain circumstances in power down (which can
> occur at any time), the /app file system is being corrupted beyond what
> an automatic fsck at boot can repair.
It sounds like you do a short duration write followed by fsync()
(or at least you could sync if you wanted to). Did you enable
soft updates for /app? What did ``fsck -y'' report?
Cheers,
JH
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